1. THE ENDOCRINE SYSTEM

2. There are two systems that regulate the body
There are two systems that regulate the body. The nervous system relays information to the body using _electrical impulses_that travel very _quickly_, but the messages are short-lived.
The endocrine system uses _hormones____, or _chemical_ messages that travel through the _blood____ to relay information to the body.

3. The endocrine system is slower-acting, but the action of hormones is _longer lasting_. The _hypothalamus__, which maintains homeostasis in the body, controls most of the glands of the endocrine system.

4. HORMONE
GLAND
EFFECT
Growth Hormone
Pituitary Gland 
Stimulates _mitosis_; undersecretion results in _dwarfism__; oversecretion results in _gigantism_

5. Thyroxine
Thyroid
Regulates __metabolism____; requires _iodine___ for normal function

6. Insulin
Pancreas
_Lowers________ blood _glucose___ concentration by stimulating cells to take up glucose; triggers storage of glucose as _glycogen______; not produced in individuals with _Type I Diabetes_____
Glucagon
__Increases______ blood glucose concentration by breaking down _glycogen_______ stored in liver to glucose

7. Fight or Flight response video
Epinephrine
(_Adrenaline_)
Adrenal Glands
Known as _”fight or flight”________ hormone
_Bronchioles___ dilate to increase air flow for _cellular respiration_____
_Glycogen_____ in the liver is broken down to glucose for _cellular respiration____
_Heart___ rate is increased
Blood flow to the _skeletal__ muscles increases
Blood flow to the _digestive____ system is decreased
Fight or Flight response video

8. Testosterone
Testes
Triggers development of secondary sex characteristics; _meiosis_____ to produce __haploid____ sperm cells.

9. Estrogen/
Progesterone
Ovaries
Triggers development of secondary sex characteristics; __meiosis______ to produce __haploid_____ egg cells.